some minor cleanup, change the object files output dir

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
Revert the change in ImageReader::processDXTColor, removes unused some define.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
figured out how to assign the value of outputBufferSize propery, mau be not?

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
.gitmodules, readme and todo.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>